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Symantec Norton AntiVirus vulnerable to DoS via the "Auto-Protect" module

Vulnerability Note VU#146020

Original Release Date: 2005-03-30 | Last Revised: 2005-03-30


Symantec Norton AntiVirus may hang or crash when the Auto-Protect module scans certain files.


Symantec Norton AntiVirus is an anti-virus product for desktop and enterprise use. The Norton AntiVirus "Auto-Protect" module provides automatic file scanning and detection of viruses, Trojans, and worms. However, the Auto-Protect module may hang when scanning certain file types.


A user may be able to cause the system to crash or hang by introducing a certain file type to the system. The user may introduce the file by downloading it, copying it, or receiving it in electronic mail, for example. Electronic mail and similar file introduction vectors may allow a remote attacker to exploit this flaw with a minimum of local user interaction.


Apply an update

Symantec has released fixes for this problem that are available through the LiveUpdate functionality of the products. Symantec advisory SYM05-006 provides details on obtaining updates through LiveUpdate or other channels.

Vendor Information


Symantec Corporation Affected

Updated:  March 30, 2005



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


Symantec advisory SYM05-006 provides details on the vulnerability and available updates to correct the flaw.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

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Thanks to Isamu Noguchi, JPCERT, and IPA for reporting this vulnerability.

This document was written by Ken MacInnis.

Other Information

CVE IDs: CVE-2005-0922
Severity Metric: 4.50
Date Public: 2005-03-28
Date First Published: 2005-03-30
Date Last Updated: 2005-03-30 20:21 UTC
Document Revision: 8

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